application layer(redirected from OSI layer 7)
The top layer of the OSI seven layer model. This layer handles issues like network transparency, resource allocation and problem partitioning. The application layer is concerned with the user's view of the network (e.g. formatting electronic mail messages). The presentation layer provides the application layer with a familiar local representation of data independent of the format used on the network.
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application layerThe software in the OSI protocol stack (layer 7 of 7) that provides the starting point of the communications session. For example, email, Web browsing and video streaming applications reside at layer 7. See OSI model and TCP/IP abc's.
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